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Part 22
Doom (2016)

Part 22

Walkthrough for Doom (2016) Part 22: Accessing the Helix Stone, including secrets, collectibles, and boss fight strategies for the Cyberdemon.

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Walkthrough for Doom (2016) Part 22: Accessing the Helix Stone, including secrets, collectibles, and boss fight strategies for the Cyberdemon.

Walkthrough
  1. 1
    Enter access tunnels (SECRET 9.3) and find the "Olivia Pierce Model, Eliteguy" collectible and a Mega-Health. Consider using Rich Get Richer for upgrades.
  2. 2
    Press the screen as indicated by the waypoint to enter the Lazarus Archives.
  3. 3
    In the circular archive room, find SECRET 9.6, COLLECTIBLE 9.2 "Samuel Hayden Model, Toxicguy" behind a red display screen on the upper floor.
  4. 4
    In the anteroom to Olivia's Lab, find CODEX ENTRY "UAC Personnel / Olivia Pierce".
  5. 5
    In Olivia's Private Lab, interact with a screen after grabbing BFG Ammo, a Munitions Crate, and ARGENT CELL 9.1. Interact with a dilapidated computer to get the Combat Challenge "Demon Destruction".
  6. 6
    Return to the circular archive room for Mission 9: Fight: Circular Archive Room, facing endless Imps, Hell Knights, a Mancubus, and Cacodaemons.
  7. 7
    After the fight, a circular stairway descends.
  8. 8
    Proceed to Mission 9: Fight: Small fight in Bloody Temple / Pew Area, clearing Possessed Securities and The Possesseds. Armor is available behind you.
  9. 9
    Enter Mission 9: Circular Hatch Room. Look right for a Lever to access a Classic Map. Jump into the pit (SECRET 9.7) to get ELITE GUARD 9.3 and SECRET 9.8, CLASSIC MAP 8.1 "Doom - Tower of Babel".
  10. 10
    Jump back out and interact with the "Cycle Hatch" waypoint. Jump onto the platform to be lifted up.
  11. 11
    Drop down and enter the "Maintenance Only" door for Mission 9: Fight: Server Hall, fighting Possessed Securities, a Pinkie, and more The Possesseds.
  12. 12
    Continue through the increasingly bloody hallway to Mission 9: Server Hall. Interact with the energy refractor control terminal to open twin doors.
  13. 13
    Enter Mission 9: Fight: Two-Level Lounges, fighting Imps, Possessed Soldiers, and The Possessed.
  14. 14
    After clearing the area, find a bloody duct in the upper-floor lounge on the right to access SECRET 9.9, RUNE CHALLENGE 9.2, "Saving Throw". Find ELITE GUARD 9.4 nearby.
  15. 15
    Proceed to the large silo for Mission 9: Portal Area Fight. Enter the narrow hallway and teleporter.
  16. 16
    Before teleporting, equip In-Flight Mobility. Enter the teleporter and immediately jump back to land on a shelf. Use the BFG for the "Thread The Needle" Combat Challenge.
  17. 17
    Use the Plasma Gun / Heat Blast and grab the Haste Powerup. Use another BFG if needed. Grab the Quad Powerup when Pinkies or Hell Knights appear.
  18. 18
    Follow waypoints for Mission 9: Prepare for Boss fight, grabbing supplies and CODEX ENTRY "Monsters / Cyberdemon". You will receive 6 bonus Weapon Upgrade Points.
  19. 19
    Prepare for Mission 9: Boss Fight, part 1: Mars against the Cyberdemon.
Tips
  • The "Rich Get Richer" Rune can be upgraded cheaply by repeatedly picking up the Mega-Health in the backstage area and dying to reset the checkpoint.
  • For the Portal Area Fight, using the BFG from the shelf after the teleporter is an effective strategy for the "Thread The Needle" Combat Challenge and the fight itself.
  • The Cyberdemon's Rockets can be avoided by continuous movement.
  • The Cyberdemon's Charge attack requires a quick jump to evade.
  • The Jumpable Laser Shot must be jumped over to avoid significant damage.
  • Collectibles: "Olivia Pierce Model, Eliteguy", "Samuel Hayden Model, Toxicguy", ELITE GUARD 9.3, ELITE GUARD 9.4.
  • Secrets: SECRET 9.3, SECRET 9.6, SECRET 9.7, SECRET 9.8, SECRET 9.9.
  • Codex Entries: "UAC Personnel / Olivia Pierce", "Monsters / Cyberdemon".
  • Argent Cell: ARGENT CELL 9.1.
  • Rune Challenge: RUNE CHALLENGE 9.2, "Saving Throw".
  • Classic Map: CLASSIC MAP 8.1 "Doom - Tower of Babel".
  • Combat Challenges: "Demon Destruction", "Thread The Needle".
  • Weapon Upgrade Points: 6 bonus points before the Cyberdemon boss fight.

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